fix: add guidance parameters for LC wrapper models (#255)

* fix: add docstring to LC wrapper models

* fix: fix metadata passing with LC embedding wrapper

libs/ktem/ktem/embeddings/manager.py

@@ -50,6 +50,7 @@ class EmbeddingManager:
                 }
                 if item.default:
                     self._default = item.name
+                    self._models["default"] = self._models[item.name]
 
     def load_vendors(self):
         from kotaemon.embeddings import (

libs/ktem/ktem/index/file/index.py

@@ -344,7 +344,7 @@ class FileIndex(BaseIndex):
     def get_admin_settings(cls):
         from ktem.embeddings.manager import embedding_models_manager
 
-        embedding_default = embedding_models_manager.get_default_name()
+        embedding_default = "default"
         embedding_choices = list(embedding_models_manager.options().keys())
 
         return {